/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

* Definition file for class ClockWorldView.

*

*/

// System includes

#include <QGraphicsItem>

#include <QStandardItem>

#include <QStandardItemModel>

#include <HbInstance>

#include <HbAbstractViewItem>

#include <HbMenu>

#include <HbAction>

#include <HbStyleLoader>

#include <HbListView>

// User includes

#include "clockworldview.h"

#include "clockdocloader.h"

#include "clockappcontrollerif.h"

#include "clockcommon.h"

#include "settingsutility.h"

#include "timezoneclient.h"

#include "clockcityselectionlist.h"

#include "clockhomecityitem.h"

/*!

	\class ClockWorldView

	The world clock view of the clock application.

 */

/*!

	Constructor.

	\param parent The parent of type QGraphicsWidget.

 */

ClockWorldView::ClockWorldView(QGraphicsItem *parent)

:HbView(parent),

 mSelectedItem(-1)

{

	// Timer for updating list data upon time change/update.

	mRefreshTimer = new QTimer();

	connect(

			mRefreshTimer, SIGNAL(timeout()),

			this, SLOT(refreshCityList()));

	// Create the model.

	mCityListModel = new QStandardItemModel();

}

/*!

	Destructor.

 */

ClockWorldView::~ClockWorldView()

{

	if (mDocLoader) {

		delete mDocLoader;

		mDocLoader = 0;

	}

	if(mCityListModel){

		delete mCityListModel;

	}

	HbStyleLoader::unregisterFilePath(":/style/hblistviewitem.css");

	HbStyleLoader::unregisterFilePath(":/style/hblistviewitem.widgetml");

	HbStyleLoader::unregisterFilePath(":/style/hblistviewitem_color.css");

}

/*!

	Called by the ClockViewManager after loading the view from the docml.

	The initializaion/setup of the view is done here.

	\param controller The ClockAppController object.

	\param docLoader Pointer to ClockDocLoader object.

 */

void ClockWorldView::setupView(

		ClockAppControllerIf &controllerIf,

		ClockDocLoader *docLoader)

{

	mDocLoader = docLoader;

	mAppControllerIf = &controllerIf;

	mTimezoneClient = controllerIf.timezoneClient();

	mSettingsUtility = controllerIf.settingsUtility();

	// Establish required connections.

	connect(

			mTimezoneClient, SIGNAL(timechanged()),

			this, SLOT(updateAllLocationInfo()));

	connect(

			mTimezoneClient, SIGNAL(autoTimeUpdateChanged(int)),

			this, SLOT(updateCurrentLocationInfo(int)));

	connect(

			mTimezoneClient, SIGNAL(cityUpdated()),

			this, SLOT(updateAllLocationInfo()));

	mDisplayWorldClockView = static_cast<HbAction *> (

			mDocLoader->findObject("worldClockAction"));

	mDisplayWorldClockView->setCheckable(true);

	mDisplayWorldClockView->setChecked(true);

	connect(

			mDisplayWorldClockView, SIGNAL(changed()),

			this, SLOT(refreshWorldView()));

	// Get the currently added locations to the list.

	mCityInfoList = mTimezoneClient->getSavedLocations();

	// Get the homecity widget.

	mHomeCityWidget = qobject_cast<ClockHomeCityItem *>(

			mDocLoader->findWidget(CLOCK_WORLD_HOMECITY));

	// Get the city list item.

	mCityListView = qobject_cast<HbListView *> (

			mDocLoader->findWidget(CLOCK_WORLD_CITYLIST));

	HbStyleLoader::registerFilePath(":/style/hblistviewitem.css");

	HbStyleLoader::registerFilePath(":/style/hblistviewitem.widgetml");

	HbStyleLoader::registerFilePath(":/style/hblistviewitem_color.css");

	mCityListView->setLayoutName("citylist-portrait");

	mCityListView->setModel(mCityListModel);

	// Get the toolbar/menu actions.

	mAddCityAction = static_cast<HbAction *> (

			mDocLoader->findObject("addCityAction"));

	connect(

			mAddCityAction, SIGNAL(triggered()),

			this, SLOT(handleAddLocation()));

	mShowAlarmsViewAction = static_cast<HbAction *> (

			mDocLoader->findObject("alarmsAction"));

	connect(

			mShowAlarmsViewAction, SIGNAL(triggered()),

			this, SLOT(showAlarmsView()));

	HbMainWindow *window = hbInstance->allMainWindows().first();

	connect(

			window, SIGNAL(orientationChanged(Qt::Orientation)),

			this, SLOT(loadSection(Qt::Orientation)));

	if (mCityInfoList.count() > 0) {

		// There is atleast one city. Refresh needed.

		// Calculate after how much time the refresh has to happen.

		QTime currentTime = QDateTime::currentDateTime().time();

		int after = 60 - currentTime.second();

		mRefreshTimer->start(after * 1000);

	}

	connect(

			mCityListView,

			SIGNAL(longPressed(HbAbstractViewItem *, const QPointF &)),

			this,

			SLOT(handleItemLongPressed(HbAbstractViewItem *, const QPointF &)));

	// Update current location info.

	updateCurrentLocationInfo(mTimezoneClient->timeUpdateOn());

	// Populate the list.

	for (int index = 0; index < mCityInfoList.count(); index++) {

		addCityToList(mCityInfoList.at(index));

	}

	// Adding the "Add city" in options menu.

	mAddCityMenuAction = new HbAction(

			QString(hbTrId("txt_clock_opt_add_city")),this);

	menu()->addAction(mAddCityMenuAction);

	mAddCityMenuAction->setVisible(true);

	connect(

			mAddCityMenuAction, SIGNAL(triggered()),

			this, SLOT(handleAddLocation()));

	// Check for disabling of addCityAction in view toolbar.

	if ((KMaximumCityListCount-1) == mCityInfoList.count()) {

		mAddCityAction->setEnabled(false);

		mAddCityMenuAction->setVisible(false);

	}

}

/*!

	Refreshes the data in the city list.

 */

void ClockWorldView::refreshCityList()

{

	updateCurrentLocationInfo(mTimezoneClient->timeUpdateOn());

	int cityInfoCount = mCityInfoList.count();

	if (cityInfoCount) {

		QStandardItem *item = 0;

		for (int infoIndex = 0; infoIndex < cityInfoCount; infoIndex++) {

			item = mCityListModel->item(infoIndex);

			item->setData(

					getCityListDisplayString(mCityInfoList.at(infoIndex)),

					Qt::DisplayRole);

			item->setData(

					getCityListDecorationString(mCityInfoList.at(infoIndex)),

					Qt::DecorationRole);

		}

		// Start the timer again for one minute.

		QTimer::singleShot(60 * 1000, this, SLOT(refreshCityList()));

	}

}

/*!

	Updates the current location info.

 */

void ClockWorldView::updateCurrentLocationInfo(int networkTime)

{

	HbMainWindow *window = hbInstance->allMainWindows().first();

	Qt::Orientation currentOrienation = window->orientation();

	loadSection(currentOrienation);

	if (!networkTime) {

		// Get the updated home city.

		LocationInfo homeCity = mTimezoneClient->getCurrentZoneInfoL();

		QMap<QString, QVariant> itemList;

		QString value;

		QDateTime dateTime = QDateTime::currentDateTime();

		// Show the date. If date is current date then show 'today'.

		QString dateInfo = dateTime.toString(

				mSettingsUtility->dateFormatString());

		itemList.insert(value.setNum(ClockHomeCityItem::Date), dateInfo);

		// Show the city and country name.

		QString placeInfo =

				homeCity.cityName + tr(", ") + homeCity.countryName;

		itemList.insert(value.setNum(ClockHomeCityItem::City), placeInfo);

		// Show the time at that location.

		QString timeInfo = dateTime.toString(

				mSettingsUtility->timeFormatString());

		itemList.insert(value.setNum(ClockHomeCityItem::Time), timeInfo);

		//Use the home city specific icons.

		// Display day/night indicators.

		QString dayNightIconPath = "";

		if (isDay(dateTime)) {

			dayNightIconPath = "qtg_large_clock_home";

		} else {

			dayNightIconPath = "qtg_large_clock_night_home";

		}

		itemList.insert(value.setNum(

				ClockHomeCityItem::DayNightIndicator), dayNightIconPath);

		// Show dst icon when needed.

		if (homeCity.dstOn) {

			QString dstIconPath = "qtg_mono_day_light_saving_time";

			itemList.insert(value.setNum(ClockHomeCityItem::Dst), dstIconPath);

		}

		mHomeCityWidget->setHomeCityItemData(itemList);

	}

}

/*!

	Handles the long press on each item in the citylist.

	Displays a list item specific context menu.

	\param item The HbAbstractViewItem that was long pressed.

	\param coords The position where mouse was pressed.

 */

void ClockWorldView::handleItemLongPressed(

		HbAbstractViewItem *item, const QPointF &coords)

{

	// Get the ndex of the selected item.

	mSelectedItem = item->modelIndex().row();

	// On long press we display item specific context menu.

	HbMenu *itemContextMenu = new HbMenu();

	// Add the actions to the context menu.

	mSetCurrentLocationAction = itemContextMenu->addAction(

			hbTrId("txt_clk_menu_set_as_current_location"));

	mRemoveCityAction = itemContextMenu->addAction(

			hbTrId("txt_clk_menu_delete"));

	// Show the menu.

	itemContextMenu->open(this, SLOT(selectedMenuAction(HbAction*)));

	itemContextMenu->setPreferredPos(coords);

	itemContextMenu->setAttribute( Qt::WA_DeleteOnClose,true);

}

/*!

	This slot is called when Add location action is triggered. It is responsible

	for launching the city selection list.

 */

void ClockWorldView::handleAddLocation()

{

	// Construct the city selection list and show the same.

	mCitySelectionList = new ClockCitySelectionList(mTimezoneClient, this);

	connect(

			mCitySelectionList, SIGNAL(citySelected(LocationInfo)),

			this, SLOT(handleCitySelected(LocationInfo)));

	// Show the city list.

	mCitySelectionList->showCityList();

}

/*!

	This slot handles delete action on the city list. It removes the item from

	the view.

 */

void ClockWorldView::handleDeleteAction()

{

	if (-1 != mSelectedItem) {

		QStandardItem *item = mCityListModel->takeItem(mSelectedItem);

		mCityListModel->removeRow(mSelectedItem);

		delete item;

		mCityInfoList.removeAt(mSelectedItem);

		mSelectedItem = -1;

		// Update the data file.

		mTimezoneClient->saveLocations(mCityInfoList);

		if (mCityInfoList.count() <= 0) {

			// No need to refresh the list anymore.

			mRefreshTimer->stop();

		} else if (mCityInfoList.count() < (KMaximumCityListCount-1) &&

				!mAddCityAction->isEnabled()) {

			mAddCityAction->setEnabled(true);

			mAddCityMenuAction->setVisible(true);

		}

	}

}

/*!

	This slot sets the selected city as the current location.

 */

void ClockWorldView::handleSetAsCurrentLocationAction()

{

	// Get the info of the selected item.

	LocationInfo newHomeCity = mCityInfoList[mSelectedItem];

	// Check if time update is set to ON.

	// If yes, reset it to OFF and change the home location.

	if (mTimezoneClient->timeUpdateOn()) {

		mTimezoneClient->setTimeUpdateOn(false);

		QStandardItem *item = mCityListModel->takeItem(mSelectedItem);

		mCityListModel->removeRow(mSelectedItem);

		delete item;

		mCityInfoList.removeAt(mSelectedItem);

	} else {

		// The current location and home city should be swapped.

		// Store the info of current home city.

		LocationInfo oldHomeCity = mTimezoneClient->getCurrentZoneInfoL();

		// Update the info list.

		mCityInfoList.removeAt(mSelectedItem);

		mCityInfoList.insert(mSelectedItem, oldHomeCity);

	}

	// Update the home city with the timezone server.

	mTimezoneClient->setAsCurrentLocationL(newHomeCity);

	// Update the current location info.

	updateCurrentLocationInfo(mTimezoneClient->timeUpdateOn());

	// Update the offset difference in each list item.

	refreshCityList();

	// Update the data file.

	mTimezoneClient->saveLocations(mCityInfoList);

	mSelectedItem = -1;

}

/*!

	Slot to handle the case when a city has been selected in from the city

	selection list.

	\param info of type LocationInfo which contains the city selected.

 */

void ClockWorldView::handleCitySelected(LocationInfo info)

{

	// Info is invalid if the timezoneId is set to -1. We don't do anything in

	// that case.

	if (-1 != info.timezoneId) {

		// Now we check if the city is already added in the list.

		bool proceed = true;

		for (int i = 0; i < mCityInfoList.count(); i++) {

			if (info.timezoneId == mCityInfoList.at(i).timezoneId

					&& (info.cityName == mCityInfoList.at(i).cityName)

					&& (info.countryName == mCityInfoList.at(i).countryName) ) {

				proceed = false;

				break;

			}

		}

		LocationInfo currentCity = mTimezoneClient->getCurrentZoneInfoL();

		// Check if the selected city is not the home city.

		if (

				(info.timezoneId == currentCity.timezoneId)

				&& (info.cityName == currentCity.cityName)

				&& (info.countryName == currentCity.countryName)) {

			proceed = false;

		}

		if (proceed) {

			// This is new city totally. So add it.

			// Add the city information to the list

			mCityInfoList.append(info);

			QModelIndex index = addCityToList(info);

			mCityListView->scrollTo(index);

			mTimezoneClient->saveLocations(mCityInfoList);

			// Start the refresh timer if it was stopped previously.

			if (!mRefreshTimer->isActive()) {

				// Calculate after how much time the refresh has to happen.

				QTime currentTime = QDateTime::currentDateTime().time();

				int after = 60 - currentTime.second();

				mRefreshTimer->start(after * 1000);

			}

		}

	}

	if ((KMaximumCityListCount-1) == mCityInfoList.count() &&

			mAddCityAction->isEnabled()) {

		mAddCityAction->setEnabled(false);

		mAddCityMenuAction->setVisible(false);

	}

	// Cleanup.

	mCitySelectionList->deleteLater();

}

/*!

	Navigates to the clock alarms view.

 */

void ClockWorldView::showAlarmsView()

{

	mAppControllerIf->switchToView(MainView);

}

/*!

	Slot which gets called when `World Clock' action is triggered from the view

	toolbar. This is responsible for reloading the content of worldclock view.

 */

void ClockWorldView::refreshWorldView()

{

	mDisplayWorldClockView->setChecked(true);

}

/*!

	Loads the appropriate section based on window orientaion.

 */

void ClockWorldView::loadSection(Qt::Orientation orientation)

{

	bool networkTime = mTimezoneClient->timeUpdateOn();

	bool loadSuccess;

	if (Qt::Horizontal == orientation) {

		if (networkTime) {

			// Do not show home city.

			mDocLoader->load(

					CLOCK_WORLD_VIEW_DOCML,

					CLOCK_WORLD_VIEW_LANDSCAPE_NOHOMECITY_SECTION,

					&loadSuccess);

			mHomeCityWidget->hide();

		} else {

			mDocLoader->load(

					CLOCK_WORLD_VIEW_DOCML,

					CLOCK_WORLD_VIEW_LANDSCAPE_HOMECITY_SECTION,

					&loadSuccess);

			mHomeCityWidget->show();

		}

	} else if (Qt::Vertical == orientation) {

		if (networkTime) {

			// Do not show home city.

			mDocLoader->load(

					CLOCK_WORLD_VIEW_DOCML,

					CLOCK_WORLD_VIEW_PORTRAIT_NOHOMECITY_SECTION,

					&loadSuccess);

			mHomeCityWidget->hide();

		} else {

			// Show home city.

			mDocLoader->load(

					CLOCK_WORLD_VIEW_DOCML,

					CLOCK_WORLD_VIEW_PORTRAIT_HOMECITY_SECTION,

					&loadSuccess);

			mHomeCityWidget->show();

		}

	}

	mCityListView->update();

}

/*!

	Slot which gets called for timeChanged signal of timezone client.

	Refreshes both homecity & city list.

 */

void ClockWorldView::updateAllLocationInfo()

{

	updateCurrentLocationInfo(mTimezoneClient->timeUpdateOn());

	updateCityList();

	refreshCityList();